THE SMART TRICK OF OPTICAL GRADE SINGLE CRYSTAL DIAMOND CRYSTAL THAT NOBODY IS DISCUSSING

We have measured the reflectance of rhenium within the seen region to pressures nearly 100 GPa inside a diamond anvil mobile (DAC). By photographing the reflecting floor, we visually show there are challenges to obtaining precise values within a DAC for quite a few explanations, which include cupping of the diamonds and roughening with the surface